What happens when you try to use them? Are you blocking cookies, if yes or
if some security application, firewall, antivirus is blocking turn off the
cookie blocking feature.
Open Internet Explorer, go to Tools, select Internet Options, on the General
tab click Delete Cookies, Delete Files and accept the option to delete all
offline content and click Clear History. Go to the Privacy tab, click Edit
and be sure neither your Bank nor MSN are set to block or always block, if
the are set them to allow. Click the Advanced button and set all cookies to
accept.
Have you always had this problem with MSN and your online bank. If yes,
perhaps your login information is incorrect.
For advice specific to problems with secure sites, have a look at the first
link - for general advice, have a look at the second:
http://www.mvps.org/inetexplorer/answers2.htm#secure_sites
http://www.mvps.org/inetexplorer/answers.htm#dns